From Pathfinder Wiki
The Challenging Part
The most challenging requirement of this honor is probably this:
13. On your own or with a group, complete one of the following engineering projects, OR a project at your skill level.
- a. Build a paper plane, trimming and making adjustments for better flight
- b. Build a compass using a box, a nail, and a magnet
- c. Build a miniature dam using craft sticks and rocks